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Provisional Recommendations

Analytical Chemistry Division
Commission on General Aspects of Analytical Chemistry (V.1)

Nomenclature for X-Ray Emission Spectrochemical Analysis

This draft document contains the nomenclature and practices of X-ray spectrochemical analysis, which is practically carried out by X-ray emission spectroscopy (XES), especially by the X-ray fluorescence method. Quantitative analysis by XES has excellent repeatability. Reproducibility and accuracy of XES, however, depend strongly on specimen preparation and data analysis. Some 60 terms together with definitions are contained herein. These terms are followed by condensed descriptions of the conditions that should be observed in order to realize feasible analytical performance. General comments refer to similarity and difference of terms used in X-ray analysis and in other optical methods. Terms related to material examined describe specimen preparation-related matters. Terms related to X-ray generation deal with the mechanism of X-ray generation and X-ray sources. These also refer to X-ray attenuation, which is important in quantitative analysis. Terms related to X-ray measurement cover spectrometer and detector systems. Terms related to X-ray data interpretation concern statistical description of X-ray intensity measurement and various quantification methods. The analytical function method and the fundamental parameter method, both widely used, are described in a concise manner referring to an ASTM standard.

This document is a revision of the IUPAC Recommendations 1979, 'Nomenclature, symbols, units and their usage in spectrochemical analysis, part IV: X-ray emission spectroscopy', Pure Appl. Chem. 52, 2541-2552 (1980).

Comments by 30 April 2000
To Prof. Yohichi Gohshi
National Institute for Environmental Studies
16-2 Onogawa Tsukuba 305-0053, JAPAN

Fax: +81-298-51-2854
E-mail: [email protected]

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